140 MOLLUSCA. 



No. 628. Pleurotomaria ornata, Defrance. 



This species takes its name from the row of 

 tubercles which crowns its spiral whorls. From the Infe- 

 rior Oolite of Calvados, France, and now in the Ward Mu- 

 seum, University of Rochester. Price, $0.50. 



No. 629. Pleurotomaria lenticularius, Sow. 



From the Trenton limestone (Lower Silurian), Watertown, N. Y. 



Price, $0.25. 



No. 630. Pleurotomaria Lucina, Hall. 



From the Corniferous limestone (Devonian), Clarence, Onondaga Co., N. Y. 



Price, $0.30. 

 No. 631. Pleurotomaria tabulata, Conrad. 



From the Coal Measures, Graysville, 111. Price, $0.30. 



No. 632. Murchisonia taellacincta, Hall. 



This Haliotid is from the Trenton limestone (Lower Silu- 

 rian), MiddleviUe, N. Y. Price, $0.30. 



No. 633. Capulus elegans, Barr. 



From the Upper Silurian, Bohemia, and now in the Ward Museum, Uni- 

 versity of Rochester. Price, $0.30. 



No. 634. Capulus rODUStUS, Barr. 



From the Upper Silurian, Zochkow, Bohemia, and now in the same Mu . 

 seum as the preceding. Price, $0.25. 



No. 635. Platyceras ventricosum, Conrad. 



From the Lower Helderberg (Upper Silurian), Hudson, N. Y. Price, $0.60. 



No. 636. Platyceras nodosum, Conrad. 



From the Oriskany sandstone (Devonian), Albany Co., N. Y. Price, $0.75. 



No. 637. Dentalium Noe, Bonelli. 



From the Older Pliocene, Astezan, Piedmont, and now in the private Geolog- 

 ical Cabinet of Mr. Ward, Rochester. Price, $0.30. 



No. 638. Porcellia crassinoda, White and Whitfield. 



This shell much resembling some of the coiled cephalopoda in external form, 

 is from the Chemung group (Devonian), Burlington, Iowa. Price, $0.60. 



No. 639. Bellerophon bicarinatus, Leveiile. 



This type-species of this well-marked genus is from the Carboniferous lime- 

 stone of Tournay, Belgium, and now in the private Geological Cabinet of Mr. 

 Ward, Rochester. Price, $0.20. 



No. 640. Bucania Chicagoensis, McChesney. 



This species, allied to Bellerophon, is from the Niagara limestone (Upper Si- 

 lurian), Cook Co., 111. Price, $0.50. 



